Hi there, I am studying for an engineering degree, and need to transpose this formula. I'm normally ok at this, however on this particular one I keep getting a very slightly different answer to the text book.

I need to transpose this for (A2):

q=(A)squareroot[(2gh/(A/A2)^2 -1]

Sorry about the messy presentation, I don't know how to use the code to make nice formulas! The bit in [square brackets] is all uner the squareroot.

Just ask if your not sure how the original formula reads.

I got an answer of:

A2=+/- squareroot[(q^2)(A^2)-q^2/2ghA2]

In the text book, the -q^2 is +q^2 and is on the bottom of the fraction.

Any help with this would be greatly appriciated.

Thanks in advance, Mike